所以我在1周前开始编程，我有点困惑为什么我的程序没有减去1，当任何问题的答案不正确时

Question

我无法从这个python程序中的分数中减去一个。当我运行代码时，它显示从0到4的答案，但不是负数，我希望答案为负，如果答案太多是错误的。代码如下：***print("Hello and welcome to my quiz! ")score = 0# this the question i want it to add 1 if answer is correct and subtract 1 if answer is incorrect  print("question 1: what is my name? ")ans1 = input()if ans1 == 'mark':    print('correct')    score += 1else:print('incorrect')    score -= 1# second questionprint("question 2: what is my age? ")ans2 = input()if ans2 == '19':    print('correct')    score += 1else:print('incorrect')score -= 1print("question 3: what is my fathers name? ")ans3 = input()# third questionif ans3 == 'john':    print('correct')    score += 1else:print('incorrect')score -= 1**# fourth question**print("question 4: what is my mothers name? ")ans4 = input()if ans4 == 'Emily':    print('correct')    score += 1else:print('incorrect')score -= 1print ('your score is', score ) # answer can be in negative***

Answer 1

这实际上甚至不应该运行。

else:print('incorrect')
    score -= 1

您需要有一个单行 else 语句，或者将 else 语句的所有代码放在下一行并正确缩进它。蟒蛇是关于空白的。

以下内容应该可以解决您的问题。

else:    print('incorrect')
    score -= 1

Answer 2

无论答案如何，都将调用增量。例如

# second question

print("question 2: what is my age? ")

ans2 = input()

if ans2 == '19':

    print('correct')

    score += 1

else:print('incorrect')

score -= 1

如果答案是正确的，那么分数将递增，但无论如何，分数也会降低。需要正确缩进，如下所示score -=1

# second question

print("question 2: what is my age? ")

ans2 = input()

if ans2 == '19':

    print('correct')

    score += 1

else:

    print('incorrect')

    score -= 1

如果您在脚本中尝试这样做，结果可能更符合您的预期。

Answer 3

该程序几乎没问题。如果我回答所有问题不正确，我将获得负分。最后一行是错误的，因为您无法将积分器与字符串连接起来。此外，您需要在“else”语句下正确缩进内容。这将是完成的程序：

print("Hello and welcome to my quiz! ")

score = 0

# this the question i want it to add 1 if answer is correct and subtract 1 if answer is incorrect

print("question 1: what is my name? ")

ans1 = input()

if ans1 == 'mark':

    print('correct')

    score += 1

else:

    print('incorrect')

    score -= 1

# second question

print("question 2: what is my age? ")

ans2 = input()

if ans2 == '19':

    print('correct')

    score += 1

else:

    print('incorrect')

    score -= 1

print("question 3: what is my fathers name? ")

ans3 = input()

# third question

if ans3 == 'john':

    print('correct')

    score += 1

else:

    print('incorrect')

    score -= 1

# fourth question**

print("question 4: what is my mothers name? ")

ans4 = input()

if ans4 == 'Emily':

    print('correct')

print('your score is ' + str(score) )